import java.util.Scanner;

public class Task06 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入成绩");
        int score = sc.nextInt();
        Task06 t = new Task06();
        t.score(score);
    }

    public void score(int score) {
        if (score >= 80) {
            System.out.println("良好");
        }
        if (score >= 60 && score < 80) {
            System.out.println("中等");

        }
        if (score < 60) {
            System.out.println("差");
        }
    }
}